今天进行oracle云迁移，执行到rman的restore database;的时候报错信息：
- RMAN> restore database;
- Starting restore at 21-MAR-16
- using channel ORA_DISK_1
- creating datafile file number=1 name=/data/oracle/powerdes/system01.dbf
- RMAN-00571: ===========================================================
- RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
- RMAN-00571: ===========================================================
- RMAN-03002: failure of restore command at 03/21/2016 20:47:09
- ORA-01180: can not create datafile 1
- ORA-01110: data file 1: '/data/oracle/powerdes/system01.dbf'
- RMAN> exit
方案一：看到不能create，查看到/data/oracle/powerdes目录已经有 ，所以移除mv，此方案不能生效
[oracle@yueworldoracle_crm backup]$ mkdir /tmp/oracle/
[oracle@yueworldoracle_crm backup]$ mv /data/oracle/powerdes/*.dbf /tmp/oracle/
方案二：重新去原idc库上备份控制文件，再进行恢复，此方案还是不通
去原来的库上，备份控制文件：
RMAN> backup current controlfile;
Starting backup at 21-MAR-16
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=139 device type=DISK
channel ORA_DISK_1: starting full datafile backup set
channel ORA_DISK_1: specifying datafile(s) in backup set
including current control file in backup set
channel ORA_DISK_1: starting piece 1 at 21-MAR-16
channel ORA_DISK_1: finished piece 1 at 21-MAR-16
piece handle=/oracle/app/oracle/flash_recovery_area/POWERDES/backupset/2016_03_21/o1_mf_ncnnf_TAG20160321T211047_cgzwprbc_.bkp tag=TAG20160321T211047 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01
Finished backup at 21-MAR-16
RMAN> exit
将控制文件传输到云库上面：
[oracle@wgq__web_3_90 data]$ scp -P5001 /oracle/app/oracle/flash_recovery_area/POWERDES/backupset/2016_03_21/o1_mf_ncnnf_TAG20160321T211047_cgzwprbc_.bkp 2.15.27.6:/oracle/backup/
oracle@42.159.237.46's password:
o1_mf_ncnnf_TAG20160321T211047_cgzwprbc_.bkp 100% 9600KB 4.7MB/s 00:02
[oracle@wgq__web_3_90 data]$
RMAN> restore controlfile to '/oracle/app/oracle/powerdes/control01.ctl' from '/oracle/backup/o1_mf_ncnnf_TAG20160321T211047_cgzwprbc_.bkp';
Starting restore at 21-MAR-16
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=134 device type=DISK
channel ORA_DISK_1: restoring control file
channel ORA_DISK_1: restore complete, elapsed time: 00:00:03
Finished restore at 21-MAR-16
RMAN>
......省略alter database mount; catalog start with 过程...
RMAN> restore database;
Starting restore at 21-MAR-16
using channel ORA_DISK_1
creating datafile file number=1 name=/data/oracle/powerdes/system01.dbf
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of restore command at 03/21/2016 21:23:09
ORA-01180: can not create datafile 1
ORA-01110: data file 1: '/data/oracle/powerdes/system01.dbf'
RMAN>
